#!/bin/bash

# Copyright 2018 Istio Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

function setup_and_export_git_sha() {
  if [[ -n "${CI:-}" ]]; then
    if [[ "${CI:-}" == 'bootstrap' ]]; then
      # TODO: Remove after update to pod-utils

      # Make sure we are in the right directory
      # Test harness will checkout code to directory $GOPATH/src/github.com/istio/istio
      # but we depend on being at path $GOPATH/src/istio.io/istio for imports
      if [[ ! $PWD = ${GOPATH}/src/istio.io/istio ]]; then
        mv "${GOPATH}/src/github.com/${REPO_OWNER:-istio}" "${GOPATH}/src/istio.io"
        export ROOT=${GOPATH}/src/istio.io/istio
        cd "${GOPATH}/src/istio.io/istio" || return
      fi

      # Set artifact dir based on checkout
      export ARTIFACTS_DIR="${GOPATH}/src/istio.io/istio/_artifacts"
    elif [[ "${CI:-}" == 'prow' ]]; then
      # Set artifact dir based on checkout
      export ARTIFACTS_DIR="${ARTIFACTS}"
    fi

    if [ -z "${PULL_PULL_SHA:-}" ]; then
      export GIT_SHA="${PULL_BASE_SHA}"
    else
      export GIT_SHA="${PULL_PULL_SHA}"
    fi

  else
    # Use the current commit.
    GIT_SHA="$(git rev-parse --verify HEAD)"
    export GIT_SHA
  fi
  gcloud auth configure-docker -q
}
